" Mary is really worried ___ her exam." A." to " B." for" C."at " D." about" Answer and Feedback Answer:D do you want? view more test Xem thêm Share this post Some other questions you may be interested in. Don’t forget …………………. the door when you leave. I enjoyed ……………… the movie. She avoided ………………… them because she was in a hurry to leave. You promised ………………… me a diamond necklace for my birthday. She has agreed …………………. I thanked them ………………… me out. I expect him …………….. at 4 o’clock. Would you like ………………… with us? I don’t feel like ……………… it. I tried ................................... a ticket, but they were all sold out.